201620278480

素因数分解:

$2^4\times 5^1\times {\mathrm{61909}}^1\times {\mathrm{40709}}^1$

素因数の和:102631

約数の個数: 40

約数和(自身を含む): 468786234600

約数和(自身を除く): 267165956120

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 40709, 61909, 81418, 123818, 162836, 203545, 247636, 309545, 325672, 407090, 495272, 619090, 651344, 814180, 990544, 1238180, 1628360, 2476360, 3256720, 4952720, 2520253481, 5040506962, 10081013924, 12601267405, 20162027848, 25202534810, 40324055696, 50405069620, 100810139240, 201620278480]

約数ペア:

[(1, 201620278480), (2, 100810139240), (4, 50405069620), (5, 40324055696), (8, 25202534810), (10, 20162027848), (16, 12601267405), (20, 10081013924), (40, 5040506962), (80, 2520253481), (40709, 4952720), (61909, 3256720), (81418, 2476360), (123818, 1628360), (162836, 1238180), (203545, 990544), (247636, 814180), (309545, 651344), (325672, 619090), (407090, 495272)]